﻿using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;

namespace Accountant.Utils
{
  public class CollapseWhenNull : IValueConverter
  {
    public static CollapseWhenNull Instance { get { return new CollapseWhenNull(); } }
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
      return value == null ? Visibility.Collapsed : Visibility.Visible;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
      throw new NotImplementedException();
    }
  }
}